Hand-tool



A. MANGINI.

HAND TOOL.

APPLICATION FILED Aue.8.191s.

throw,

Patented Feb. 17, 1920.

5mm n for fizirawafci fl wam . ANDREW J. MAN GIN I, OF W..-i.RR.EN, PENN SYLVANIAQ HAND-TOOL.

Application filed August 8, 1918.

To all whom it may concern:

Be-it known that I, ANDREW J. MANGINI,

a citizen of the United Stats, residing at lVarren, in the county ofWarren and State 0f Pennsylvania, have invented new and usefulImprovements in Hand Tools, of which'the following is a specification.

The present invention relates to improvements in hand tools orimplements, and more especially to those of the general class em bodyinga handle and blades or similar operative parts adapted to be removablyand interchangeably fitted to the handle. The primary object of theinvention is to prowhereby the different interchangeable blades oroperative parts may be easily and quickly removed from the handle andyet a firm c011- nection is provided between thehandle and the blade oroperative part, the tool having preferably a holder adapted to receivethe blade or equivalent part, this holder being pivotally or movablyconnected to the handlewhereby relative movement between the holder andthe handle will automatically and forcibly eject the blade or operativepart therefrom toenable another blade or other operative part to bereadily substituted.

To these and other ends, the invention consists in certain improvements,and combinations and arrangements of parts, all as will be hereinaftermore fully described, the novel features being pointed out particu larlyin the claims at the end of the specift cation.-

In the accompanying drawing:

Figure 1 is an elevation, partly in section,

of a hand tool constructed in accordance with the present invention.

Fig. 2 is aview similar to Fig. l but show ing apart thereof in sectionin a plane at a right'angle to the plane of the section in Fig. 1.

to hand tools or implements of the class adapted to removably andinterchangeably Specification of Letters Patent.

vide a novel and improved tool of this class Fig. 3 represents alongitudinal section of kinds althou h it is particularl an )licable 7 ba y .L

Patented Feb. 17, 1920. Serial No. 248,881.

receive different blades or operative parts. preferred embodiment of theinvention is shown in the'accompanying drawing and will behereinafterdescribed in detail. It is to be understood, however, thatthe invention is not restricted to the precise construction'shown asequivalent constructions are contemplated and will be included withinthe scope of the claims.

The tool, as shown, comprises a handlel which mav be composedof wood orother appropriate material, a ferrule or fitting 2 mgly shaped shank 9on the blade and the holderis also formed with a slot or kerf 10 to fitthe tongue 3 attached to the handle. The blade is preferably formed onits end with a rectangular key or tang 11 which fits into the'slot'orkerf 10 of the holder when the blade isinserted into the holder,theengagement of the opposite flat sides of the key with the opposedparallel walls of the slot 10 of the holder forming a driving connection between the holder The base of the holder against the end of theferrule or fitting 2 and when the holder is in this position" the key 11on the blade will be seated in the notch 4 in the tongue 3. erativelyconnected'to'the ferrule 2 by a 6 is adapted to abut A holder and the Iblade;

The holder is oppivot pin 12 which is secured in the holder and extendsthrough aslide 13 which is guided to reciprocate in a slot 14' formedthetongue-3, this pin and longitudinally in slide permitting pivotalmovementand the handle.

15 'is attached to through the relative longitudinal and between theblade holder Preferably, a stem or rod the slide 13 and extends with theforward wall of the ferr le andthe forward wall of the ferrule 2 and acompression spring 16' is interposed spring also serves to normallyretain the the handle.

blade holder in longitudinal alinement with V In using a toolconstructed as shown and described, the blade or other operative part i.lwhich it is desired'to use is inserted into the socket 8 of the holderso that'the key 11 on the inner end of the blade is seated in the notch4L of the tongue 3 and between the walls of the slot 10 in the holder.The

blade is then operatively connected to the s rin servin to normallmaintain the ing instantly removable abutting engagement of these parts.When it is desired to remove a blade for any purpose, such for exampleas for substitution of another blade, it is only necessary to retractthe holder lon 'itudinally of the handle and then swing the holderlaterally in either direction, as shown for example in Fig. 3. By soswinging'the holder and the blade therein, the key 11 on the blade iscaused to engage one of the cam surfaces 5 on the forward end of thetongue 3,'and as the swinging of-the'holder and blade continues thisearn 1 surface will forcibly eject the 'blade' from the holder, thelongitudinal movement of the holder relatively to the handle beinglimited by the abutment of the slide 13 against 'the forward end of theslot 14. After the blade has beenejected the spring 16 willautomatically restore the holder to its normal position in alinementwith the. handle and with its rear end abutting against'the ferrule. Theholder is then ready to receive another blade or operative. part.

' A hand tool embodying the present invention enables screw-driverblades, scrapers, ehisels and'other operative parts to be readily andeasily interchanged with respect to ahandle common to all the'bladesor'operative parts,-thus avoiding delays heretofore experienced in theuseof tools of this general class, due to'the sticking of the blade inthe-handle or holder, the blade or operative part, according to thepresent invention, be-

from the handle without the aid'of any attachment or another tool.Furthermore, the blade or operativepart is securely keyed or connectedto the holder and the holder in turn is securely coupled or connected tothe handle,

and hence the maximum power which can be applied to the handle will betransmitted without strainor breakage to the blade or operative part. 1Iclaim as my invention: 1 A tool comprising 'a support, a holder having'a socket to detachably receive a holder pivotally blade, said holderbeing connected to the g support and tiltable' with respect thereto, 7and means operated byrelative tilting movement between theholder andsupport for forcibly ejecting the blade from the holder. 7 2. Ahandtoolcomprising a handle,a related to the handle and adapted tointerchangeably receive different blades or operative parts, and cammeans operated by relative pivotal; movement between the holder and 7blade or operative part from the holder.

3. A tool comprising a handle, movable laterally with respectto thehandle and adapted to removably receive a blade or operating part,andmeans including a cam attached to the handle and operative upon theblade during relative lateral movement between the holder and handle forejecting the blade'from the holder. .7 H

45Atool comprising ahandle having a handle for ejecting a a holdertongue fixedthereto and provided with a,

cam surface, and a blade holder slotted to fit said ton ue and capableof displacement i laterally thereof, the cam on said tongue bebliidefrom the holder.

5. A tool comprising a tongue rigidly fixed thereto and provided with acam surface on its extremity, a blade holder slotteddiametrically tostraddle said tongue, and meanspivotally connecting said holder to thehandle and permitting rela tive tilting movement between such parts,

said cam on the tongue being operative on of the .ing operative on ablade in said holder durin such lateral displacement to eject the handlehaving a tongue,a blade holder tiltably fittedto'said tongue and havingabutments adapted to cooperate with the abutments on the handle, andmeans pivotally connecting the holder to the handle, the cam surface onthe tongue being operative on a blade in the holder during relativepivotal movement between the holder and handle to: eject such blade.

7. A tool comprising a handle provided with a ferrule havinga flattongue projecting therefrom with an intermediate notch and diverging camsurfaces at the extremity, said tongue, being adapted to a part of ablade in the holder be seated in said notch in and a blade holdertiltable laterally on:

the tongue while the holder and handle are 7 in alinement. and oneofsaid cam'surfaces being operative on such part of the blade when theholder is tilted relatively to the handle, thereby'ejecting the bladefrom the handle. I 8. A tool comprising a handle provided with-a tonguepro ecting therefrom and 10 handle the tongue being operative on a bladein the holder, during such relative tilting movement, to eject theblade.

In testimony whereof I have hereunto set my hand in presence of thesubscribing Witnesses.

ANDREW J. MANGINI. lVitnesses KARL A. KRANTZ, BERT V. BARBER, SWALD. H.RICKERSON.

